Rockwell Automation 2708-DH5B2L_DH5B4L Attended Workstation - Manual (Page 46)

Chapter 5
Configuration Menus
5–5
Upper Poll Addr (1 - 99) – This value is set on each Concentrator/-
Master unit and specifies the highest unit
number plus 1, that the Master or
Concentrator should attempt to locate when
bringing units online. It is used to expedite
accommodation of workstations coming
online in a small network environment.
Offline Cycle (normally 40) – This value is set on each Concentrator/-
Master workstation and gives the number of
online unit polls which will be performed
before an attempt is made to find an offline
workstation. Larger values will initiate
fewer polls for offline workstations.
Max Net Retries (1 - 999) – This value is set on each Concentrator/-
Master workstation and is the number of
times that the Concentrator/Master will retry
a failed poll before designating the
workstation offline.
Comm Mode – The following communication protocols are
selectable:
XON/XOFF
DSR
Polled
Request
The following is a description of those parameters accessed by pressing
<ENTER> when 2–Comm Port Menu is showing on the display.
Comm Port Mode
The four parameters available are:
The data collection software you use on your Host will determine which
comm port mode to use. (If you are using the Network Manager Software
package (Catalog No. 2708-NNM), set the comm port mode to POLLED.)
XON/XOFF Use Control-Q (XON) and Control-S (XOFF).
In this mode, the Master sends the data records to the Host as
they are collected. Records are sent from the workstation
even if there is a problem with the Host, or no Host exists.
Note: If the host is not ready to receive the data, the data
will be lost.
DSR Lower DSR to stop transmissions.
Menu 1: Network
Menu Paramters (cont’d)
Menu 2: Comm Port
Menu Parameters